note 124441 added to function.date-default-timezone-set

As Christopher Kramer said 9 years ago, not setting default timezone has performance impacts on PHP 5.6, and on PHP 7.1 It hasn't on php 7.2 anymore. As I set error_reporting to 0 in my script, it doesn't seem linked to the fact it is logging the error. I ran its benchmark script (modified) on Linux multiple times, alternating 'on' and 'off' setting : <?php error_reporting(0); $tz = ($argc > 1 && ($argv[1] == 'on')) ? 'on': 'off'; if ($tz == 'on') date_default_timezone_set(@date_default_timezone_get()); $start=mktime(0,0,0,1,1,2005); $end=mktime(0,0,0,1,1,2020); $t0=microtime(true); for ($i=0; $i<50000; $i++) date("H:i:s d.m.Y",rand($start,$end)); echo "Time ($tz): ".((microtime(true) - $t0)*100)."\n"; ---- Server IP: 208.43.231.9 Probable Submitter: 185.85.3.168 (proxied: 109.69.192.8) ---- Manual Page -- http://php.net/manual/en/function.date-default-timezone-set.php Edit -- https://master.php.net/note/edit/124441 Del: integrated -- https://master.php.net/note/delete/124441/integrated Del: useless -- https://master.php.net/note/delete/124441/useless Del: bad code -- https://master.php.net/note/delete/124441/bad+code Del: spam -- https://master.php.net/note/delete/124441/spam Del: non-english -- https://master.php.net/note/delete/124441/non-english Del: in docs -- https://master.php.net/note/delete/124441/in+docs Del: other reasons-- https://master.php.net/note/delete/124441 Reject -- https://master.php.net/note/reject/124441 Search -- https://master.php.net/manage/user-notes.php